What each screening evaluates, from public sources

Mercor screens with assessments and an AI interview (Mercor, Assessments), DataAnnotation with a Starter Assessment (DataAnnotation FAQ), and Outlier with skill screenings followed by a project qualification (Outlier FAQ). This lesson collects what those three state publicly about what they evaluate. It covers what each says it evaluates, how many attempts you get, and which rules apply while you take it. It does not cover answers or questions. The pages were read on 2026-10-11 and they change.

Mercor: assessments and an AI interview

Mercor calls its assessments systematic evaluations of your skills, judgment and ability to execute tasks that mirror real-world projects. They are forms or AI interviews (Mercor, Assessments).

It lists four things they help project teams understand: your domain expertise and experience, your approach to solving real-world problems, your ability to follow instructions and manage ambiguity, and the quality and clarity of your written or verbal responses (Mercor, Assessments).

Even when two listings use the same assessment, Mercor says the scoring and weighting may vary with the requirements of the role (Mercor, Assessments).

In an AI interview, an AI interviewer asks role-specific questions, produces a transcript of your answers, and evaluates your performance for the listing. Most interviews take about 20 minutes (Mercor, AI Interview).

Mercor says some interviews are technical and require deep discussion of prior experience, and others test language or reasoning skills. They are conducted in English unless stated otherwise, on a computer with a working camera and microphone (Mercor, AI Interview).

Mercor: attempts, humans and data

Mercor offers a practice interview that is free, not tied to any application, and does not affect future opportunities. You can take it as many times as you like (Mercor, AI Interview).

An interview that counts can be retaken up to three times across all related applications. The waiting room asks you to save retakes for technical problems, hiring managers can see your retake count, and a retake resets your application progress (Mercor, AI Interview).

Most assessments allow only a single submission, and retakes are not available unless an assessment says so (Mercor, Assessments).

Human reviewers may review assessments to verify suitability for a role. Mercor staff are not permitted to review drafts or coach answers, and Mercor Support does not provide scores or individual feedback (Mercor, Assessments).

Mercor keeps video, audio and an AI transcript of interviews to evaluate you and recommend your profile to potential employers. It says it does not sell this data and does not use interviews to train AI models (Mercor, AI Interview).

Mercor: the rules while you are being assessed

Unless an assessment says otherwise, you may not use AI or LLM tools to generate responses, copy content from external sources, share answers or collaborate with others, or repost assessment content publicly. Some assessments disable copy and paste for that reason (Mercor, Assessments).

For interviews, Mercor says grammar and wording checks are acceptable, but you should not use large language models to compose responses, rate model responses, generate rationales or explanations, or evaluate code. You may discuss general experiences with the interviews, but not specific questions or screenshots (Mercor, AI Interview).

DataAnnotation: one Starter Assessment

DataAnnotation says you can take the Starter Assessment only once, with no retakes. It reviews submissions for thoroughness and accuracy and not for speed, and usually emails a decision within a few days (DataAnnotation FAQ).

If you pass, you get platform access and can begin choosing projects. After that, you can take additional specialist assessments to unlock higher-paying projects (DataAnnotation FAQ).

It also asks workers to verify their identity, through a partner called Persona, and says it never asks for money from you for anything (DataAnnotation FAQ).

Outlier: general onboarding, then a project qualification

Outlier describes three stages. The first is initial platform onboarding: basic setup and verification. The second is project qualification, where you review the project’s guidelines and complete assessment tasks. The third is tasking (Outlier FAQ).

It says general onboarding typically takes 30 to 90 minutes and includes creating an account, selecting your areas of expertise, completing skill screenings so it can match you with projects, and identity verification (Outlier FAQ).

It also reviews each resume against the minimum requirements for specific domains. Project onboarding varies by project (Outlier FAQ).

Screening does not end when you are in

DataAnnotation says work availability depends on demand for your skills and on your past performance, and that subpar or problematic contributions may cost you access to future projects (DataAnnotation FAQ).

Mercor’s contract terms say hourly pay does not depend on the quality of your work, but that substandard output may affect your eligibility for future opportunities (Mercor, Contracts).